CN218998040U - Optical micro switch and mouse - Google Patents

Abstract

The utility model discloses an optical microswitch and a mouse. The optical micro switch comprises a shell and a pressing catch, wherein the pressing catch is arranged on the shell in a telescopic manner; a public terminal, a normally closed terminal, a normally open terminal and a spring plate are arranged in the shell; the light generating piece, the light receiving piece and the light blocking column are also arranged; the light generating piece is matched with the light receiving piece; the light blocking column is connected with the elastic sheet and can move in or out along with the contact switching movement of the movable part of the elastic sheet from the light channel between the light generating piece and the light receiving piece. The optical micro switch of the utility model not only ensures the use effect of the optical micro switch, but also reduces the manufacturing difficulty and cost of the elastic sheet, reduces the assembly difficulty of the whole micro switch and prolongs the service life of the whole micro switch. The mouse provided by the utility model is provided with the optical micro switch, has excellent use experience, long service life and low cost.

Description

Optical micro switch and mouse

Technical Field

The utility model relates to the technical field of micro switches, in particular to an optical micro switch and a mouse provided with the same.

Background

The mouse is an external input device of the computer and is also an indicator for coordinate positioning of a computer display system, the operation of the computer becomes simpler, more convenient and faster, and the mouse also becomes an indispensable accessory when the computer is used. The key instruction operation of the mouse is realized by a micro switch arranged in the mouse. When the mouse button is pressed each time, the micro switch can be triggered, and then a corresponding instruction is output.

At present, a micro switch arranged in a mouse used in the market is mainly an optical micro switch. The optical micro switch realizes signal conversion, mainly drives the elastic sheet to perform contact switching of the terminal by pressing the pressing button, promotes light shielding or eliminates light shielding, and further achieves the purpose of signal conversion. Light shielding is realized in the existing optical micro switch, and direct shielding is usually realized for an integral extending structure on the elastic sheet, or shielding is realized by pressing a soft rubber block for the integral extending structure on the elastic sheet. The structure complexity of the spring plate is increased, the production difficulty and cost of the spring plate are increased, and the assembly difficulty of the spring plate in the optical micro switch is increased; the extending structure of the elastic sheet presses the soft rubber block to realize shielding, after the elastic sheet is used for a long time, the soft rubber block is damaged, the switch is required to be detached for replacement, the service life of the switch is shortened, and the use cost is increased.

Disclosure of Invention

The utility model aims to solve the problems that the existing optical micro switch has a complex spring plate structure, so that the overall optical micro switch is high in assembly and use cost and low in service life, and the switching signal conversion prompting effect is poor.

The utility model also aims to provide a mouse which comprises the optical micro switch.

The aim of the utility model is achieved by the following technical scheme.

An optical micro switch comprises a shell and a pressing catch, wherein the pressing catch is arranged on the shell in a telescopic manner;

a public terminal, a normally closed terminal, a normally open terminal and a spring plate are arranged in the shell; the elastic sheet is provided with a fixed part and a movable part; the fixed part of the elastic sheet is connected with the common terminal; the movable part of the elastic sheet is positioned between the normally-closed terminal and the normally-open terminal and keeps constant contact with the normally-closed terminal or the normally-open terminal in a free state; pressing the pressing mechanism, wherein the pressing mechanism is retracted inwards of the shell and can act with the elastic sheet, so that the movable part of the elastic sheet is enabled to be contacted and switched between the normally closed terminal and the normally open terminal;

the light generating piece, the light receiving piece and the light blocking column are also arranged; the light generating piece is matched with the light receiving piece; the light blocking column is connected with the elastic sheet and can move in or out along with the contact switching movement of the movable part of the elastic sheet from the light channel between the light generating piece and the light receiving piece.

In a preferred embodiment, in the free state, the light blocking column moves into a light path between the light generating member and the light receiving member, the light path between the light generating member and the light receiving member being blocked; pressing the pressing mechanism, the light blocking column moves out of a light channel between the light generating piece and the light receiving piece, and the light channel is smooth.

In a preferred embodiment, the light blocking column includes a connection portion and a light blocking portion connected to each other; the connecting part is provided with a bayonet, the movable part of the elastic sheet is provided with a clamping end, and the clamping end is clamped on the bayonet; the light shielding part can move in or out from a light ray channel between the light generating piece and the light receiving piece along with the contact switching movement of the movable part of the elastic piece.

In a further preferred embodiment, a light shielding cover is arranged on the light shielding part of the light shielding column.

In a preferred embodiment, the light blocking column is provided with a first light passing hole; when in a free state, the light blocking column moves into a light channel between the light generating piece and the light receiving piece, the first light through hole corresponds to the light channel, and the light channel is smooth; pressing the pressing mechanism, moving the light blocking column out of the light channel between the light generating piece and the light receiving piece, staggering the first light through hole and the light channel, and blocking the light channel.

In a further preferred embodiment, the light blocking column includes a connecting portion and a light shielding portion connected to each other; the connecting part is provided with a bayonet, the movable part of the elastic sheet is provided with a clamping end, and the clamping end is clamped on the bayonet;

the light shielding part can move in or out along with the contact switching movement of the movable part of the elastic sheet from the light channel between the light generating part and the light receiving part, and the first light through hole is formed in the light shielding part.

In a further preferred embodiment, a light shielding cover is arranged on the light shielding part of the light shielding column; and a second light through hole corresponding to the first light through hole is formed in the light shield.

In a further preferred embodiment, in the above optical micro switch, a light blocking slot is disposed between the light generating element and the light receiving element, and the light blocking portion of the light blocking column can move in the light blocking slot in a telescopic manner along with the contact switching movement of the movable portion of the elastic sheet; the light blocking groove is provided with the light ray channel.

In a further preferred embodiment, the inner wall of the light blocking groove is provided with a first convex rib; the shading part of the light blocking column can slide in the light blocking groove by being guided by the first convex rib.

In a further preferred embodiment, in the above optical micro switch, a movable chute is provided in the housing, and the connection portion of the light blocking column can move in the movable chute in a telescopic manner along with the contact switching movement of the movable portion of the elastic sheet; and the inner wall of the movable chute is provided with a second convex rib, and the connecting part of the light blocking column can slide and move in the movable chute under the guidance of the second convex rib.

In a preferred embodiment, the optical micro switch of any one of the above, the pressing catch is provided with a pressing catch oil groove.

In a preferred embodiment, the optical micro switch of any one of the above embodiments, wherein the normally closed terminal has an arc contact, and the movable portion of the spring plate abuts against the arc contact when contacting the normally closed terminal; and/or the normally open terminal is provided with an arc-shaped contact, and the movable part of the elastic sheet is abutted against the arc-shaped contact when contacting with the normally open terminal.

In a preferred embodiment, the optical micro switch according to any one of the foregoing embodiments, the housing includes a base and a cover that are fastened to each other, the common terminal, the normally closed terminal, and the normally open terminal are fixedly disposed on the base, the pressing latch is disposed on the cover in a retractable manner, and the elastic sheet is disposed in a cavity where the base and the cover are fastened to each other.

In a preferred embodiment, the optical micro switch of any one of the above, the light generating member and the light receiving member are disposed on a PCB board; the PCB is characterized in that a mounting buckle is arranged on the shell, and the shell is fixed on the PCB through the mounting buckle in a clamping manner.

A mouse comprising an optical microswitch as claimed in any one of the preceding claims.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

the optical micro switch is provided with the light blocking column connected with the elastic sheet, and can drive the light blocking column to stretch and move to block light or eliminate light blocking when the elastic sheet performs contact switching movement, so that signal conversion is realized. The optical micro switch has the advantages that the use effect of the optical micro switch is guaranteed, meanwhile, the manufacturing difficulty and cost of the elastic sheet are reduced, the assembly difficulty of the whole micro switch is reduced, and the service life of the whole micro switch is prolonged.

Moreover, the connecting part and the shading part of the light blocking column are respectively and telescopically arranged in the movable chute and the light blocking slot, and the convex ribs are arranged in the slots, so that the telescopic movement of the light blocking column can be guided in a sliding way, the operation of the light blocking column is smooth, and the hand feeling of the push switch is improved. Meanwhile, a light shielding cover can be arranged on the light shielding part of the light shielding column, so that the light shielding effect is improved, and the sensitivity and reliability of signal conversion are improved.

In addition, the pressing mechanism is provided with the pressing mechanism oil groove, so that lubricating oil in the pressing mechanism groove of the rubber cover can be received, oil stain seepage is avoided, and the use experience is improved. The normally open terminal and the normally closed terminal are provided with arc-shaped contacts, so that the contact between the elastic sheet and the normally open terminal and the contact between the elastic sheet and the normally closed terminal are in surface-to-line contact, and the sound of the elastic sheet striking the terminal during contact is crisp, so that the prompting effect is good. And the shell of the optical micro-gap switch is fixed with the PCB board through the clamping connection of the buckle, so that the optical micro-gap switch is reliable in fixation and convenient to assemble and disassemble, and the use and installation efficiency of the optical micro-gap switch is improved.

The mouse provided by the utility model is provided with the optical micro switch, has excellent use experience, long service life and low cost.

Drawings

Fig. 1 is a schematic perspective view of an optical micro switch according to the present utility model mounted on a PCB board in an embodiment;

fig. 2 is a schematic front view of an optical micro switch according to the present utility model mounted on a PCB board in an embodiment;

fig. 3 is a schematic cross-sectional structure of the optical micro switch of the present utility model mounted on a PCB board in an embodiment;

fig. 4 is a schematic diagram of an explosion structure of the optical micro switch of the present utility model mounted on a PCB board in an embodiment;

fig. 5 is a schematic perspective view of the pressing mechanism;

fig. 6 is a schematic perspective view of a common terminal;

FIG. 7 is a schematic perspective view of a spring plate;

fig. 8 is a schematic perspective view of a normally closed terminal;

fig. 9 is a schematic perspective view of a normally open terminal;

FIG. 10 is a schematic diagram of an assembled structure of a light blocking column and a light shielding cover according to the first embodiment;

FIG. 11 is a schematic perspective view of an optical micro switch according to an embodiment of the present utility model;

FIG. 12 is an enlarged schematic view of the portion A in FIG. 11;

FIG. 13 is a schematic view of a partial structure of a base;

fig. 14 is a schematic structural diagram of a light blocking column in the second embodiment;

fig. 15 is a schematic view of a light blocking column in the third embodiment;

fig. 16 is a schematic diagram of an assembled structure of a light blocking column and a light shielding cover in the fourth embodiment;

the drawings are marked: 1-a shell, 101-a base, 1011-a light blocking groove, 1012-a first convex rib, 1013-a light channel, 1014-a movable sliding groove, 1015-a second convex rib, 1016-a mounting buckle, 102-a glue cover, 1021-a pressing groove, 2-a pressing groove, 201-a pressing groove, 3-a common terminal, 301-a first fixed groove, 302-a second fixed groove, 4-a normally closed terminal, 401-a first circular arc contact, 5-a normally open terminal, 501-a second circular arc contact, 6-a shrapnel, 61-a fixed part, 611-a first mounting hole, 612-a second mounting hole, 613-a first bayonet, 614-a second bayonet, 62-a movable part, 621-a clamping end, 7-a light blocking column, 71-a connecting part, 711-bayonet, 72-a shading part, 721-a shading head, 722-a first light passing hole, 8-a shading cover, 801-a second light passing hole, 9-a light generating part, 10-a light receiving part, 11-a board, 1101-a clamping groove.

Detailed Description

The technical scheme of the present utility model is described in further detail below with reference to specific examples and drawings, but the scope and embodiments of the present utility model are not limited thereto.

In the description of the specific embodiments, it should be noted that, directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "top", "bottom", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put when used, and terms such as "first", "second", etc., are merely for convenience of distinction, only for convenience of description and simplicity of description, and do not indicate or imply that the structures or elements to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the utility model, nor should they be construed as indicating or suggesting relative importance.

Unless specifically stated or limited otherwise, the terms "mounted," "configured," "connected," "secured," and the like should be construed broadly, as they may be either fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be. In addition, when the term "and/or" is used, it is intended that any and all combinations including one or more of the associated listed items are contemplated.

Example 1

The optical micro switch of the present utility model, please refer to fig. 1 to 4, includes a housing 1 and a latch 2. The pressing mechanism 2 is telescopically arranged on the shell 1, and when the pressing mechanism 2 is pressed to retract towards the shell 1, elements in the shell 1 can be triggered to realize signal conversion.

Specifically, the housing 1 includes a base 101 and a cover 102 that are fastened to each other. Wherein, the base 101 and the glue cover 102 are mutually buckled and internally provided with a containing cavity, the glue cover 102 is provided with a pressing slot 1021, and the pressing 2 is telescopically assembled on the pressing slot 1021 of the glue cover 102.

When in use, the pressing groove 1021 is coated with lubricating oil, so that the pressing of the pressing 2 is smooth. Preferably, referring to fig. 5, a pressing groove 201 is formed on the outer periphery of the pressing part 2. During the pressing and resetting process of the pressing mechanism 2, the lubricating oil scraped from the inner wall of the pressing mechanism slot 1021 is received by the pressing mechanism slot 201, so that the lubricating oil is prevented from being stained on the surface of the handle or the rubber cover 102 of the pressing mechanism 2, and the use experience is improved.

In addition, referring to fig. 1 to 4, the optical micro switch is assembled on the PCB 11 for cooperation. Wherein, be provided with installation buckle 1016 on the base 101 of casing 1, specifically all be provided with installation buckle 1016 at the front and back end of base 101, offered on the PCB board 11 with the joint groove 1101 that installation buckle 1016 corresponds, casing 1 is fixed on PCB board 11 through the cooperation joint of installation buckle 1016 and joint groove 1101, makes the fixed reliable of optical micro-gap switch and PCB board 11, and easy dismounting.

The elements arranged in the shell 1 comprise a public terminal 3, a normally closed terminal 4, a normally open terminal 5 and an elastic sheet 6, and specifically, the public terminal 3, the normally closed terminal 4 and the normally open terminal 5 are fixedly arranged on the base 101, and the elastic sheet 6 is positioned in a cavity of the base 101 buckled with the rubber cover 102.

One end of the spring plate 6 is fixedly connected with the common terminal 3, and the other end of the spring plate can be triggered by the pressing pin 2 to switch between the normally closed terminal 4 and the normally open terminal 5. Specifically, the elastic sheet 6 has a fixed portion 61 and a movable portion 62. The fixed part 61 of the spring plate 6 is connected with the common terminal 3; the movable part 62 of the spring plate 6 is positioned between the normally closed terminal 4 and the normally open terminal 5 and keeps in constant contact with the normally closed terminal 4 or the normally open terminal 5 in a free state; the pressing mechanism 2 is pressed, the pressing mechanism 2 is contracted inwards of the shell 1 and can act with the elastic sheet 6, and the movable part of the elastic sheet 6 is promoted to contact and switch between the normally closed terminal 4 and the normally open terminal 5.

In some particularly preferred embodiments, referring to fig. 6, the common terminal 3 has first and second fixing grooves 301 and 302 disposed in front and rear directions. Referring to fig. 7, the fixing portion 61 of the spring 6 has a first mounting hole 611 and a second mounting hole 612, which are opposite to the first fixing groove 301 and the second fixing groove 302, respectively, and the front end of the first mounting hole 611 has a first bayonet 613 corresponding to the first fixing groove 301, and the rear end of the second mounting hole 612 has a second bayonet 614 corresponding to the second fixing groove 302 on a backward extending clamping arm. The movable portion 62 of the spring 6 is specifically a planar structure integrally extending on the rear end of the fixed portion 61.

When the fixing part 61 of the elastic sheet 6 is assembled, the first mounting hole 611 and the second mounting hole 612 on the fixing part 61 of the elastic sheet 6 are avoided from being sleeved outside the arrangement protrusions of the first fixing groove 301 and the second fixing groove 302, and the first bayonet 613 and the second bayonet 614 are respectively clamped and fixed with the first fixing groove 301 and the second fixing groove 302. The movable part 62 of the spring plate 6 is correspondingly positioned between the normally closed terminal 4 and the normally open terminal 5, and the movable part 62 is contacted with the normally closed terminal 4 in a free state. The pressing portion 2 corresponds to a bridging portion between the first mounting hole 611 and the second mounting hole 612, and can be pressed down to abut against the bridging portion when being pressed by an external force, so that the elastic sheet 6 is pressed to generate elastic deformation, and the movable portion 62 of the elastic sheet 6 is elastically tilted to be sprung and is switched down to contact with the normally open terminal 5. After the external force to the pressing catch 2 is released, the elastic sheet 6 can automatically recover and elastically drive the pressing catch 2 to extend upwards for resetting, and meanwhile, the movable part 62 of the elastic sheet 6 is reset through reverse elastic tilting and is switched upwards to be in contact with the normally closed terminal 4.

In a preferred embodiment, as shown in fig. 8, the normally closed terminal 4 has a first arc contact 401, and the movable portion 62 of the spring plate 6 contacts the first arc contact 401 when contacting the normally closed terminal 4. As shown in fig. 9, the normally open terminal 5 has a second arcuate contact 501, and the movable portion 62 of the spring 6 abuts against the second arcuate contact 501 when the movable portion contacts the normally open terminal 5.

When the contact is switched, the movable part 62 of the spring plate 6 can strike the first arc-shaped contact 401 or the second arc-shaped contact 501, and the movable part 62 of the spring plate 6 is in surface-to-line contact with the normally open terminal 5 and the normally closed terminal 4, so that the sound of the spring plate 6 striking the terminal during contact is crisp, and the prompting effect is good.

Further, referring to fig. 3 and 4, a light generating member 9 and a light receiving member 10 are connected to the PCB 11. Specifically, the light generating element 9 and the light receiving element 10 are arranged in a matching manner, the space between the light generating element 9 and the light receiving element 10 is the light channel 1013, and the light signal can be transmitted under the condition of no blocking, and the light signal generated by the light generating element 9 can be transmitted to the light receiving element 10 for corresponding receiving through the light channel 1013. Alternatively, the light generating member 9 and the light receiving member 10 may be a pair of tubes, including an infrared pair of tubes, or the like.

A light blocking column 7 is disposed in the housing 1 of the optical micro switch, and the light blocking column 7 is connected with the elastic sheet 6 and can move in or out along with the contact switching movement of the movable part 62 of the elastic sheet 6 from the light channel 1013 between the light generating element 9 and the light receiving element 10, so as to block the light channel 1013 during the moving in or out and further prevent the light signal transmission between the light generating element 9 and the light receiving element 10, or to eliminate the blocking of the light channel 1013 during the moving in or out and ensure the light signal transmission between the light generating element 9 and the light receiving element 10.

In a preferred embodiment, referring to fig. 10, the light blocking column 7 includes a connecting portion 71 and a light shielding portion 72 connected to each other. The connecting portion 71 has a bayonet 711, and the movable portion 62 of the spring 6 has an integrally extending locking end 621, and the locking end 621 is locked on the bayonet 711. When the elastic sheet 6 is pressed by the pressing portion 2 to elastically deform, the clamping end 621 will tilt upward or downward along with the movable portion 62, so as to drive the light blocking column 7 to move upward or downward, so that the light shielding portion 72 can move in or out from the light channel 1013 between the light generating element 9 and the light receiving element 10 along with the contact switching movement of the movable portion 62 of the elastic sheet 6.

In some preferred embodiments, the light blocking column 7 is arranged to move into the light path 1013 between the light generating member 9 and the light receiving member 10 in the free state, the light path 1013 between the light generating member 9 and the light receiving member 10 being blocked. When the pressing catch 2 is pressed, the light blocking column 7 is moved out of the light channel 1013 between the light generating member 9 and the light receiving member 10, and the light channel 1013 is unblocked.

Specifically, the light shielding portion 72 of the light shielding column 7 is of a solid structure; when the elastic sheet 6 is an elastic sheet as shown in fig. 7 and the elastic sheet 6 is elastically deformed due to the compression of the pressing portion 2, the engaging end 621 will tilt upward along with the movable portion 62. Thus, in the free state, the light shielding portion 72 of the light blocking column 7 is located in the light path 1013, blocking the light path 1013; when the pressing portion 2 is pressed, the light shielding portion 72 of the light blocking column 7 moves downward along with the movable portion 62 of the spring plate 6, so that the light path 1013 is unblocked.

Optionally, the light blocking column 7 may be made of metal or plastic. Further, especially when the light blocking column 7 is made of plastic, as shown in fig. 10, the light blocking head 721 is disposed on the light blocking portion 72 of the light blocking column 7, the light blocking head 721 is moved into or out of the light channel 1013 to block or eliminate light, and the light blocking head 721 is sleeved with the light blocking cover 8, wherein the light blocking cover 8 can further enhance the light transmission blocking effect of the light blocking head 721 on the light blocking column 7 on the light channel 1013.

In another preferred embodiment, as shown in fig. 11 and 12, the light generating member 9 and the light receiving member 10 are specifically located at the outer bottom of the base 101, and a light blocking slot 1011 is provided on the bottom of the base 101, the bottom of the light blocking slot 1011 specifically extends between the light generating member 9 and the light receiving member 10, and a notch is formed on the wall of the light blocking slot 1011 along the opposite axial direction of the light generating member 9 and the light receiving member 10, and the notch is formed as the light path 1013. The light shielding part 72 of the light shielding column 7 is arranged in the light shielding groove 1011, and can stretch and retract in the light shielding groove 1011 along with the contact switching movement of the movable part 62 of the elastic sheet 6, so that the light shielding part 72 can accurately move in or out of the light channel 1013. In some preferred embodiments, the light shielding portion 72 of the light shielding pillar 7 is configured to block the light channel 1013 when extending into the light shielding slot 1011, thereby blocking the light signal propagation between the light generating member 9 and the light receiving member 10.

Further, first ribs 1012 are provided on the inner wall of the light blocking slot 1011. The shading part 72 of the light blocking column 7 is abutted with the first convex rib 1012 in the light blocking groove 1011, and can slide and move in the light blocking groove 1011 by being guided by the first convex rib 1012, so that the light blocking column 7 runs smoothly, and the hand feeling of the push switch is improved.

In a further preferred embodiment, as shown in fig. 13, a movable chute 1014 is disposed on the base 101 of the housing 1, and the connection portion 71 of the light blocking column 7 is disposed in the movable chute 1014 and can move telescopically in the movable chute 1014 along with the contact switching movement of the movable portion 62 of the spring 6, so as to further improve the precise movement of the light blocking column 7 in or out of the light channel 1013. In addition, a second rib 1015 is disposed on the inner wall of the movable chute 1014, the connection portion 71 of the light blocking column 7 is in contact with the second rib 1015 in the movable chute 1014, and the second rib 1015 can slide in the movable chute 1014, so that the smoothness of operation of the light blocking column 7 is further improved, and the pressing feeling is better.

Example two

The difference between this embodiment and the first embodiment is that, as shown in fig. 14, the light blocking column 7 is made of metal. At least the light shielding portion 72 of the light shielding column 7 is designed to be a sheet structure, so that light can be effectively shielded directly.

Example III

The difference between this embodiment and the first embodiment is that, as shown in fig. 15, in the optical micro switch of this embodiment, when the light shielding portion 72 of the light blocking column 7 is set in the free state, it moves into the light channel 1013 between the light generating element 9 and the light receiving element 10, and the light channel 1013 between the light generating element 9 and the light receiving element 10 is unblocked. When the pressing portion 2 is pressed, the light shielding portion 72 of the light blocking column 7 is moved out of the light path 1013 between the light generating member 9 and the light receiving member 10, and the light path 1013 is blocked.

Specifically, the light shielding portion 72 of the light shielding column 7 has a first light passing hole 722. In the free state, the light shielding portion 72 of the light shielding column 7 moves into the light channel 1013 between the light generating member 9 and the light receiving member 10, the first light passing hole 722 corresponds to the light channel 1013, and light can pass through the light channel 1013 and the first light passing hole 72, so that the light channel 1013 is unblocked. The pressing portion 2 is pressed, the light shielding portion 72 of the light shielding column 7 is moved out of the light path 1013 between the light generating member 9 and the light receiving member 10, the first light passing hole 722 is offset from the light path 1013, and light cannot pass through the light path 1013, so that the light path 1013 is blocked.

In some preferred embodiments, the light shielding portion 72 of the light shielding column 7 may be designed to have a large enough area, so that the light shielding portion 72 is only partially removed when removed from the light channel 1013 under the driving of the spring sheet 6, and the first light through hole 72 and the light channel 1013 are staggered, and the portion of the light shielding portion 72 where the first light through hole 72 is not formed blocks the light channel 1013.

Alternatively, in other preferred embodiments, the elastic performance of the elastic sheet 6 is designed so that the light shielding portion 72 is only partially removed when being removed from the light channel 1013 under the driving of the elastic sheet 6, and the first light passing holes 72 and the light channel 1013 are caused to be staggered, and the portion of the light shielding portion 72, where the first light passing holes 72 are not formed, blocks the light channel 1013.

Example IV

In the optical micro switch of the present embodiment, as shown in fig. 16, the light blocking column 7 is made of plastic, or at least the light blocking portion 72 of the light blocking column 7 is made of plastic.

Further, a light shielding cover 8 is provided on the light shielding portion 72 of the light shielding column 7. The light shield 8 is provided with a second light passing hole 801 corresponding to the first light passing hole 722. In the free state, the light can pass through the light channel 1013, the second light through hole 801 and the first light through hole 722, so that the light channel 1013 is unblocked; pressing the pressing means 2, the light shielding portion 72 of the light shielding column 7 and the light shielding cover 8 thereon will move out from the light channel 1013 between the light generating element 9 and the light receiving element 10, so that the first light passing hole 722 and the second light passing hole 801 are staggered from the light channel 1013, and light cannot pass through the light channel 1013, thereby blocking the light channel 1013, and the blocking effect of the light shielding cover 8 is better.

Example five

The mouse of the present utility model is provided with the optical micro switch according to any one of the first to fourth embodiments.

The above embodiments are merely preferred embodiments of the present utility model and only the technical solutions of the present utility model have been described in further detail, but the above description is illustrative, not exhaustive, and is not limited to the disclosed embodiments, the scope and implementation of the present utility model are not limited thereto, and any changes, combinations, deletions, substitutions or modifications made without departing from the spirit and principles of the present utility model are included in the scope of the present utility model.

Claims (19)

1. The optical micro switch is characterized by comprising a shell and a pressing catch, wherein the pressing catch is arranged on the shell in a telescopic manner;

a public terminal, a normally closed terminal, a normally open terminal and a spring plate are arranged in the shell; the elastic sheet is provided with a fixed part and a movable part; the fixed part of the elastic sheet is connected with the common terminal; the movable part of the elastic sheet is positioned between the normally-closed terminal and the normally-open terminal and keeps constant contact with the normally-closed terminal or the normally-open terminal in a free state; pressing the pressing mechanism, wherein the pressing mechanism is retracted inwards of the shell and can act with the elastic sheet, so that the movable part of the elastic sheet is enabled to be contacted and switched between the normally closed terminal and the normally open terminal;

the light generating piece, the light receiving piece and the light blocking column are also arranged; the light generating piece is matched with the light receiving piece; the light blocking column is connected with the elastic sheet and can move in or out along with the contact switching movement of the movable part of the elastic sheet from the light channel between the light generating piece and the light receiving piece;

the light blocking column comprises connecting parts and light shielding parts which are connected with each other; the connecting part is provided with a bayonet, the movable part of the elastic sheet is provided with a clamping end, and the clamping end is clamped on the bayonet; the light shielding part can move in or out from a light ray channel between the light generating piece and the light receiving piece along with the contact switching movement of the movable part of the elastic piece.

2. The optical micro-switch according to claim 1, wherein a light shielding cover is provided on the light shielding portion of the light shielding column.

3. The optical micro switch according to claim 1 or 2, wherein a light blocking slot is provided between the light generating member and the light receiving member, and the light blocking portion of the light blocking column is capable of moving in a telescopic manner in the light blocking slot along with the contact switching movement of the movable portion of the elastic sheet; the light blocking groove is provided with the light ray channel.

4. The optical micro-switch according to claim 3, wherein the inner wall of the light blocking slot is provided with a first convex rib; the shading part of the light blocking column can slide in the light blocking groove by being guided by the first convex rib.

5. The optical micro switch according to claim 1 or 2, wherein a movable chute is provided in the housing, and the connection portion of the light blocking column can move telescopically in the movable chute along with the contact switching movement of the movable portion of the spring plate; and the inner wall of the movable chute is provided with a second convex rib, and the connecting part of the light blocking column can slide and move in the movable chute under the guidance of the second convex rib.

6. The optical micro switch according to claim 1, wherein the pressing portion is provided with a pressing portion oil groove.

7. The optical microswitch of claim 1 wherein the normally closed terminal has an arcuate contact thereon, the movable portion of the spring plate abutting the arcuate contact when in contact with the normally closed terminal; and/or the normally open terminal is provided with an arc-shaped contact, and the movable part of the elastic sheet is abutted against the arc-shaped contact when contacting with the normally open terminal.

8. The optical micro switch according to claim 1, wherein the housing comprises a base and a cover which are buckled with each other, the common terminal, the normally closed terminal and the normally open terminal are fixedly arranged on the base, the pressing mechanism is arranged on the cover in a telescopic manner, and the elastic sheet is positioned in a cavity buckled with the base and the cover.

9. The optical microswitch of claim 1 wherein said light generating element and said light receiving element are disposed on a PCB board; the PCB is characterized in that a mounting buckle is arranged on the shell, and the shell is fixed on the PCB through the mounting buckle in a clamping manner.

10. The optical micro switch is characterized by comprising a shell and a pressing catch, wherein the pressing catch is arranged on the shell in a telescopic manner;

a public terminal, a normally closed terminal, a normally open terminal and a spring plate are arranged in the shell; the elastic sheet is provided with a fixed part and a movable part; the fixed part of the elastic sheet is connected with the common terminal; the movable part of the elastic sheet is positioned between the normally-closed terminal and the normally-open terminal and keeps constant contact with the normally-closed terminal or the normally-open terminal in a free state; pressing the pressing mechanism, wherein the pressing mechanism is retracted inwards of the shell and can act with the elastic sheet, so that the movable part of the elastic sheet is enabled to be contacted and switched between the normally closed terminal and the normally open terminal;

the light generating piece, the light receiving piece and the light blocking column are also arranged; the light generating piece is matched with the light receiving piece; the light blocking column is connected with the elastic sheet and can move in or out along with the contact switching movement of the movable part of the elastic sheet from the light channel between the light generating piece and the light receiving piece;

the light blocking column is provided with a first light passing hole; when in a free state, the light blocking column moves into a light channel between the light generating piece and the light receiving piece, the first light through hole corresponds to the light channel, and the light channel is smooth; pressing the pressing mechanism, moving the light blocking column out of a light channel between the light generating piece and the light receiving piece, staggering the first light through hole and the light channel, and blocking the light channel;

the light blocking column comprises connecting parts and light shielding parts which are connected with each other; the connecting part is provided with a bayonet, the movable part of the elastic sheet is provided with a clamping end, and the clamping end is clamped on the bayonet; the light shielding part can move in or out along with the contact switching movement of the movable part of the elastic sheet from the light channel between the light generating part and the light receiving part, and the first light through hole is formed in the light shielding part.

11. The optical micro-switch according to claim 10, wherein a light shielding cover is provided on the light shielding part of the light shielding column; and a second light through hole corresponding to the first light through hole is formed in the light shield.

12. The optical micro switch according to claim 10 or 11, wherein a light blocking slot is provided between the light generating member and the light receiving member, and the light blocking portion of the light blocking column is movable in a telescopic manner in the light blocking slot in response to contact switching movement of the movable portion of the elastic sheet; the light blocking groove is provided with the light ray channel.

13. The optical micro-switch according to claim 12, wherein the inner wall of the light blocking slot is provided with a first convex rib; the shading part of the light blocking column can slide in the light blocking groove by being guided by the first convex rib.

14. The optical micro switch according to claim 10 or 11, wherein a movable chute is provided in the housing, and the connection portion of the light blocking column is capable of moving in the movable chute in a telescopic manner along with the contact switching movement of the movable portion of the spring plate; and the inner wall of the movable chute is provided with a second convex rib, and the connecting part of the light blocking column can slide and move in the movable chute under the guidance of the second convex rib.

15. The optical micro switch according to claim 10, wherein the housing comprises a base and a cover which are buckled with each other, the common terminal, the normally closed terminal and the normally open terminal are fixedly arranged on the base, the pressing mechanism is arranged on the cover in a telescopic manner, and the elastic sheet is positioned in a cavity buckled with the base and the cover.

16. The optical microswitch of claim 10 wherein said light generating element and said light receiving element are disposed on a PCB board; the PCB is characterized in that a mounting buckle is arranged on the shell, and the shell is fixed on the PCB through the mounting buckle in a clamping manner.

17. The optical micro switch is characterized by comprising a shell and a pressing catch, wherein the pressing catch is arranged on the shell in a telescopic manner;

a public terminal, a normally closed terminal, a normally open terminal and a spring plate are arranged in the shell; the elastic sheet is provided with a fixed part and a movable part; the fixed part of the elastic sheet is connected with the common terminal; the movable part of the elastic sheet is positioned between the normally-closed terminal and the normally-open terminal and keeps constant contact with the normally-closed terminal or the normally-open terminal in a free state; pressing the pressing mechanism, wherein the pressing mechanism is retracted inwards of the shell and can act with the elastic sheet, so that the movable part of the elastic sheet is enabled to be contacted and switched between the normally closed terminal and the normally open terminal;

the light generating piece, the light receiving piece and the light blocking column are also arranged; the light generating piece is matched with the light receiving piece; the light blocking column is connected with the elastic sheet and can move in or out along with the contact switching movement of the movable part of the elastic sheet from the light channel between the light generating piece and the light receiving piece;

the light blocking column is provided with a first light passing hole; when in a free state, the light blocking column moves into a light channel between the light generating piece and the light receiving piece, the first light through hole corresponds to the light channel, and the light channel is smooth; pressing the pressing mechanism, moving the light blocking column out of a light channel between the light generating piece and the light receiving piece, staggering the first light through hole and the light channel, and blocking the light channel;

the pressing mechanism is characterized in that a pressing mechanism oil groove is arranged on the pressing mechanism.

18. The optical micro switch is characterized by comprising a shell and a pressing catch, wherein the pressing catch is arranged on the shell in a telescopic manner;

a public terminal, a normally closed terminal, a normally open terminal and a spring plate are arranged in the shell; the elastic sheet is provided with a fixed part and a movable part; the fixed part of the elastic sheet is connected with the common terminal; the movable part of the elastic sheet is positioned between the normally-closed terminal and the normally-open terminal and keeps constant contact with the normally-closed terminal or the normally-open terminal in a free state; pressing the pressing mechanism, wherein the pressing mechanism is retracted inwards of the shell and can act with the elastic sheet, so that the movable part of the elastic sheet is enabled to be contacted and switched between the normally closed terminal and the normally open terminal;

the light generating piece, the light receiving piece and the light blocking column are also arranged; the light generating piece is matched with the light receiving piece; the light blocking column is connected with the elastic sheet and can move in or out along with the contact switching movement of the movable part of the elastic sheet from the light channel between the light generating piece and the light receiving piece;

the light blocking column is provided with a first light passing hole; when in a free state, the light blocking column moves into a light channel between the light generating piece and the light receiving piece, the first light through hole corresponds to the light channel, and the light channel is smooth; pressing the pressing mechanism, moving the light blocking column out of a light channel between the light generating piece and the light receiving piece, staggering the first light through hole and the light channel, and blocking the light channel;

the normally closed terminal is provided with an arc-shaped contact, and the movable part of the elastic sheet is abutted against the arc-shaped contact when contacting with the normally closed terminal; and/or the normally open terminal is provided with an arc-shaped contact, and the movable part of the elastic sheet is abutted against the arc-shaped contact when contacting with the normally open terminal.

19. A mouse comprising the optical microswitch of any one of claims 1 to 18.

Images